'Restricted' British Naval visual aircraft recognition manual dated 1 November 1944, published by the East Indies Station, containing typically both silhouettes and photographs together with performance figures and other useful information including Operational Radius, Bomb Load, Armament and characteristics for identification. The large format of this valuable manual is helpful in examining the photographic images, many of which are 'action' shots taken in the heat of combat. The silhouettes also benefit from this large scale. The Royal Navy fleet had to counter a significant air threat in the Far East when a Japanese naval force operated in the eastern Indian Ocean.